Make-up air damper - MD6T (6" duct), MD8T (8" duct) The Automatic Make-Up Air Damper provides a pathway for fresh air to enter a home from outdoors. The Damper opens when a compatible range hood or exhaust fan is operating, thereby creating a known, controlled point for fresh air to enter the home while air is being exhausted from the building by the exhaust fan(s) and/or range hood. The Direct-Wired make up air damper communicates with the exhaust device through an independent, hard-wired connection between the exhaust device and the Damper. The MD6 is good for hoods up to 500 CFM, the MD8 is good for up to 1000 cfm. For 1500 CFM two MD8 dampers would be needed. The Make Up Air Adapter mounts in a duct, between outdoors and cold air return within a heating system.

This Broan Elite EW56 Series Wall Mount Chimney Range Hood is available in 30" or 36" sizes for cooktops up to 60K BTU. Able to match any kitchen with its 430 #4 Brushed Stainless Steel finish, the range hood is able to detect excessive heat and adjust blowers to high speed automatically with the included Heat Sentry™ feature. Additional features include powerful blowers, baffle filters, brilliant halogen lighting, variable speed controls and make-up air damper compatibility.

Love the range hood, very quiet. No problem ordering, it was sent out in a very timely matter, got it even before we thought we would. Just had a problem with the Fed Ex people delivering it, it was 3 days later then it should have been. It looks great!!!